000 00308nam a2200121Ia 4500
008 130409s9999 xx 000 0 und d
100 _aO.P VERMA AND S.K GUPTA
245 _aWAVES AND OSCILLATIONS
260 _bR. Chand & Co.
_aN Delhi
_c1997
300 _a381
650 _aPhysics
_bB.SC.
942 _2ddc
_cBK
999 _c13740
_d13740